Wood split pulley



(No Model.) 2 SheetsSheet 1.

W. R. FEE

WOOD SPLIT PULLEY.

No. 393,326. Patented Nov. 20, 1888.

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(No Model.) 2 Sheets-Sheet 2.

W. R. FEE.

W001) SPLIT PULLEY.

No. 393,326. v Patented Nov. 20', 1888..

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Nrrnn STATES ATsNr rare VILLIAM R. FEE, OF CINCINNATI, OHIO, ASSIGNOR TO HENRY MALEY, HENRY C. BAILEY, AND GUILFORD E. MAYFIELD, OF EDINBURG,

INDIANA.

WCOD SPLIT PULLEY.

SPECIFICATION forming part Of Letters Patent NO. 393,326, dated November 20, 1888.

Application filed February 29, 1888. Serial No. 265,653. (X0 model.)

To 64% whom it may concern;

Be it known that I, WILLIAM R. Fnn, of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Improvement in Need Split Pulleys, (Case 13,) which improvement is fully set forth in the following specification and accompanying drawings, in which- Figure 1 is a perspective view of the two sections forming the split pulley. Fig. 2 is a perspective view of the two portions placed together; Fig. 3, a central sectional view showing the manner of attaching same to a shaft; Fig. 4, perspective views of the tapering split bushing; Fig. 5, perspective views of the central webs on which the pulley rim and hub are built up, and Fig. 6 side views of the webs bored.

The object in this invention is to construct large wood split pulleys; and it consists in a central web of two thicknesses of boardslapped across each other at right angles, on which is built up on each side the hub and the rim. It also consists in a central bore larger than the shaft, each end being flaring and adapted to receive a tapering split bush, all of which will now be set forth in detail.

In the drawings, A A represent semicircular boards, of any suitable material, cut to the proper thickness and of the proper are to form a pulley. These are lapped together, as shown in Fig. 5, so that their straight edges B B are at right angles to each other, and these straight edges form the central lines of the web. By so lapping the board A A and A A, respect ively, two distinct sections are produced. It will be observed that when two of these sections are placed together, being exact counterparts of each other, they form a wheel or disk. On these webs are built up on each side the hub and rim. The hub-pieces are also constructed in the same shape as the web, but smaller, the first pieces, C C, of which are laid on the web concentrically of its bore,with their straight edges D D at right angles to the edges B B of the pieces to which they are secured. The next hubpieces, E E, are laid on the preceding hub-pieces C C so that their straight edges F F are at right angles to the edges D D, and so on until a suflieient number of pieces are lapped across each other to form the hub. These pieces are glued and nailed together and pressed to make them adhere firmly to each other. It will be observed that in thus describing the parts of the two sections I have lettered them so as to make the parts correspond. Thus the straight edges B of the web of one section fit against the edges Bof the other section, the straight edges D of the hub pieces D on one section fit against the straight edges D of the pieces on the other section, and so on. The rim is built up 01' sections on the outer half of the web of each section. Each half or section of the pulley is composed of a double web. One half of each semicircular piece A A of the web projects beyond the baseline of the other piece, and the rim is built up on each halfsegment the proper width. As shown in Fig. 1, the letter G represents the rim-segments onthe'front side of a section, and H the segments on the rear side of the same section. In the other section G represents the segments on the front side of the section, and H the segments on the rear side of this same section. Each alternate rim-layer of segments retreats and projects, as shown, at

the edges B B of the web, so that when the two sections are placed together the ends of the rim-segments G H on one section will interlap with the ends of the rim-segments G H of the other section. A pulley thus constructed in the rough is then bored centrally, and each end of the bore is made flaring, as shown more clearly in Fig. 3. This bore must necessarily be larger than the shaft on which the pulley is to be placed. The web and hub-pieces being placed across each other at right with their inner straight edges crossing center of the pulley,'it is obvious that the of the bore of each halfseetion extends athree-fourths of the bore, as shown more 0 in Fig. 6. When, therefore, tapering ii wedges I, as shown at Fig. I, are driven into the flaring ends of the bore and around the shaft J, the half-sections of the pulley are fastened together by the projecting ends of the hub-pieces and the web, since the projecting ends of the lapped segments lock against the bushing and prevent the two sections of the pulley from being forced apart, while the flare of the bore and the taper of the bushing cause the latter to press tightly against the shaft when being forced in.

lVhat I claim as new is- 1. A wood split pulley of which each halfsection is composed of a web of two semicircular boards lapped on each other at right angles, their inner straight edges crossing centrally and having on each side of each half-see tion so made hub-pieces built up, and rimsegments to form the face of the pulley, sub stantially as herein set forth.

2. A wood split pulley of which each halfsection is composed of a web of two semicircular boards lapped on each other at right angles, their inner straight edges crossing centrally and having on each side of each half-section so made semicircular hub-pieces, also bni lt up at right angles to each other to correspond with the webs, and the rim-segments on each side of each section provided with projecting and retreating ends, substantially as herein set forth.

3. In a wood split pulley, a double web com posed of semicircular boards lapped across 7 W ILLTAM R. FEE. Witnesses:

.T. S. Znmsn, O. J. BAILEY. 

